| 乙烯一醋酸乙烯醋的结构与降凝性能的关系 |
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| 引用本文： | 蒋庆哲 岳国 宋昭峥 柯明 赵密福. 乙烯一醋酸乙烯醋的结构与降凝性能的关系[J]. 西南石油大学学报(自然科学版), 2006, 28(2): 71-74. DOI: 10.3863/j.issn.1000-2634.2006.02.019 |
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| 作者姓名： | 蒋庆哲 岳国 宋昭峥 柯明 赵密福 |
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| 作者单位： | (1.中国石油大学重质油国家重点实验室，北京昌平102249;2.北京神化集团;3.中石化胜利油田) |
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| 摘 要： | 用溶液聚合法合成了各种结构的乙烯一醋酸乙烯醋共聚物(EVA)降凝剂，考察了它们的结晶性质、溶解性质和降凝效果。由实验得到以下结论:EVA降凝剂的CH:链上只有远离极性基团的碳原子能够参与结晶。当参与结晶的碳原子数约等于原油中蜡的平均碳原子数的3/4时，EVA降凝剂的降凝效果最好。EVA降凝剂的相对分子质量分布的宽窄对降凝效果的影响不大，平均相对分子质量在1.2xl04时降凝效果较好。
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| 关 键 词： | 乙烯-醋酸乙烯醋共聚物 相叶分子质量分布 降凝效果 |
| 收稿时间： | 2005-02-28 |
RELATION BETWEEN STRUCTURE OF ETHENE.VINYLACETATE COPOLYMERS AND THEIR POUR POINT DEPRESSION |
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| JIANG Qing-zhe YUE Guo SONG Zhao-zheng .. RELATION BETWEEN STRUCTURE OF ETHENE.VINYLACETATE COPOLYMERS AND THEIR POUR POINT DEPRESSION[J]. Journal of Southwest Petroleum University(Seience & Technology Edition), 2006, 28(2): 71-74. DOI: 10.3863/j.issn.1000-2634.2006.02.019 |
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| Authors: | JIANG Qing-zhe YUE Guo SONG Zhao-zheng . |
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| Affiliation: | (University of Petroleum，Beijing 102249，China) |
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| Abstract: | All kinds of molecule structures of the ethylene-vinyl ace-fate copolymers(EVA) have been synthesized by solution poly-merization. Their crystallinity, solubility and the effect of lower-ing pour point of crude have been studied. Results show that on-1y carbon atoms far from polar group of EVA take part in crystal-lizing. When carbon number of alkyl chain of EVA, which takes part in crystallizing, is about equal to tbree fourths of average carbon number of wax, the effect of EVA pour point depressants is best. When the average relative molecular mass of EVA is 1 .2 x 10"，the effect of EVA is best. The distribution of relative molecular mass has little influence. |
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| Keywords: | ethylene- vinyl acetate copolymer distribution of relative molecular mass pour point depression effect |
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